生徒投稿

The chemistry class of year 10 AG conducted an acid-base titration experiment during their laboratory session. Our goal was to determine the unknown concentration of a sodium hydroxide solution by reacting it with a hydrochloric acid solution of known concentration.
The addition of acid to base reached its endpoint when the phenolphthalein indicator showed a permanent pink color that appeared in the solution. It was fascinating to see how one drop could make all the difference. The reaction we observed was a neutralisation, producing salt and water.
The experiment showed us that accuracy and patience are vital for success. We had to perform each titration multiple times until all our results matched perfectly. The experiment showed us how scientists reduce mistakes to obtain trustworthy findings.
The group managed to calculate sodium hydroxide concentration through teamwork while they developed their laboratory skills by performing exact measurements and keeping detailed records. The experiment demonstrated that basic acid-base reactions provide essential training for laboratory precision, scientific procedures, and experimental patience.